济南市冬季大气污染时空分布特征及潜在污染源区分析

doi:10.3976/j.issn.1002-4026.2023.04.014

Abstract

Abstract:

Using the datasets of major air pollutants and meteorological observations during the winter from 2016 to 2018 in Jinan, the characteristics of air pollution were analyzed to identify the major transport pathway of airmass. The results showed that during the winter from 2016 to 2018 in Jinan, about 63.8% and 34.7% of the major pollutants were PM_2.5 and PM₁₀, respectively. Of the total number of days, 58.6% had a pollution level worse than good polluted. The annual average concentration of PM_2.5 increased by 7.5 μg/m³ due to its high concentration in the winter. In terms of spatial distribution, the concentrations of PM₁₀ and PM_2.5 were high inTianqiao District, Huaiyin District, and Pingyin County; the concentration of SO₂ was high in Shanghe County and Jiyang District; and the concentrations of NO₂ and CO were high in Jiyang District, Tianqiao District and Huaiyin District. The results also showed that ρ(NO₂), ρ(CO), ρ(PM₁₀), and ρ(PM_2.5) had a positive correlation, with all r >0.7. It was inferred that traffic source, industrial combustion source, and burning coal were the major sources of particulate matter. The airmass in the winter of Jinan came from south, northwest, north, and east, and the airmass from south and east were the major transport pathway of air pollution. Further analyses of the potential source contribution and concentration weight showed that the air pollution in Jinan City was affected by the local and surrounding cities, and the current air pollution presents the characteristics of cross-contamination across regions. Therefore, a supervision and coordination mechanism for the joint prevention and control of air pollution in the region should be established to coordinate research and solve growing problems of air pollution.

Key words: air pollution, pollution characteristics, potential source contribution function, concentration weight trajectory, Jinan City

CLC Number:

WANG Zhifei, WANG Zaifeng, LÜ Chen, FU Huaxuan, BIAN Meng, SUN Fengjuan, ZHANG Wenjuan. Spatial and temporal distribution characteristics of air pollution and potential source areas in winter of Jinan[J].Shandong Science, 2023, 36(4): 114-121.

Figures/Tables 7

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References 21

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序号	站点	区县	点位属性	序号	站点	区县	点位属性
1	机床二厂	槐荫区	国控点位	13	淮海御墅	平阴县	区县点位
2	农科所	槐荫区	国控点位	14	平阴城区	平阴县	区县点位
3	济阳城区	济阳区	区县点位	15	商河城区	商河县	区县点位
4	济阳区政府	济阳区	区县点位	16	油区管委会	商河县	区县点位
5	建工学院	历城区	省控点位	17	科干所	市中区	国控点位
6	省种子仓库	历城区	国控点位	18	山东鲁能	市中区	省控点位
7	历下区	省控点位	19	北园社区	天桥区	省控点位
8	开发区	历下区	国控点位	20	济南四建	天桥区	国控点位
9	经济学院	历下区	省控点位	21	东山小学	章丘区	区县点位
10	泉城广场	历下区	省控点位	22	章丘开发区	章丘区	区县点位
11	商职学院	历下区	省控点位	23	长清大学城	长清区	省控点位
12	市监测站	历下区	国控点位	24	长清党校	长清区	国控点位

区县	ρ(PM₁₀)/ (μg·m^-3)	ρ(PM_2.5)/ (μg·m^-3)	ρ(SO₂)/ (μg·m^-3)	ρ(NO₂)/ (μg·m^-3)	ρ(CO)/ (mg·m^-3)	ρ(O₃)/ (μg·m^-3)
槐荫区	180	100	45	61	1.7	53
济阳区	163	97	62	61	1.6	67
历城区	159	92	46	60	1.5	58
历下区	152	86	43	52	1.4	59
平阴县	180	108	52	57	1.6	62
商河县	146	97	58	50	1.5	63
市中区	148	84	33	48	1.3	61
天桥区	175	102	53	66	1.6	52
章丘区	164	94	43	48	1.4	60
长清区	150	91	44	57	1.4	62

聚类	途径区域	方向	占比/ %	ρ(PM₁₀)/ (μg·m^-3)	ρ(PM_2.5)/ (μg·m^-3)	ρ(SO₂)/ (μg·m^-3)	ρ(NO₂)/ (μg·m^-3)	ρ(CO)/ (mg·m^-3)	ρ(O₃)/ (μg·m^-3)	ρ(PM_2.5)/ ρ(PM₁₀)	风速/ (m·s^-1)	相对湿度/%
1	山东西南部、安徽北部、江苏西北部及河南东北部	偏南	19.48	195	124	46	58	1.6	46	0.630	1.16	51.1
2	蒙古、山西、河北南部、山东西部	西北	23.54	157	90	50	55	1.3	44	0.570	1.26	40.2
3	蒙古、河北、北京、天津、山东北部	偏北	39.44	124	64	39	49	1.2	36	0.516	1.77	49.0
4	河北东部、渤海、山东东部	偏东	17.54	204	129	64	66	2.1	27	0.634	1.29	57.6

Spatial and temporal distribution characteristics of air pollution and potential source areas in winter of Jinan

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